Road-grader.



D. W. KING. ROAD GRADER.

APPLIUATION FILED JAIrLlQ, 1911.

Patented July '7, 1914.

THE NORRIS PETER. (0. FHOTO-LITH .Zizmwiar, jja 1/242 Wam? 1172 0 WASHINGTON, D. c.

UNITED STATES ATEN'I QIEIIIQ.

DAVID WARD KING, OF MAITLAND, MISSOURI.

Roan-cannula. 1

Application filed January 19, 1911.

To all whom it may concern:

Be it known that I, DAVID WARD KING, a citizen of the United States, residing at Maitland, in the county of Holt and State of Missouri, have invented certain new and useful Improvements in Road-Graders, of which the following is a specification.

My invention relates to improvements in road-graders, and my object is to provide a simple and efficient device of this character for leveling road surfaces without disturbing the fixed portions thereof.

In order that the invention may be fully understood, reference will now be made to the accompanying drawing, in which:

Figure 1 represents a plan view of the grader. Fig. 2 is a side elevation of the same.

In carrying out the invention I employ a pair of parallel primary scrapers 1, of substantially triangular form in cross section and having forwardly-inclined faces 2.

3 designates a plurality of bars fixed to the upper surfaces of the primary scrapers to secure the same in proper relation to each other.

4 designates a brace connecting the forward ends of the scrapers 1 to prevent said ends from springing backward beneath the resistance offered thereto when the grader is in operation.

5 designates a draft chain secured to the forward scraper 1, and provided with an equalizer 6, to which the team employed in dragging the scraper is hitched. Each of the scrapers 1 is positioned with respect to the direction of its travel, with one end in advance of the other, so as to push the loose material to one side as well as forward.

7 designates a plurality of secondary scrapers, a number of which are arranged intermediate of the primary scrapers, while one each is arranged at the front and rear of said scrapers. The secondary scrapers 7 are freely suspended from bars 3 by arms 8 and bolts 9, which latter extend through bars 3 and the upper bifurcated ends of the arms 8. This arrangement permits the entire weight of the secondary scrapers to Specification of Letters Patent.

Patented July 7, 1914.

Serial No. 603,472.

rest upon the surface of the road, and under ordinary conditions said weight is suflicient to move loose dirt and distribute the same evenly over the surface of the road, but when desired the efficiency of said secondary scrapers may be increased by retractile springs 10, secured at their upper ends to pins 11 extending through bars 8, and at their lower ends to eye-bolts 12, extending through arms 8 and provided with nuts 13, whereby they may be adjusted for the purpose of tensioning the springs 10. Preferably, the secondary scrapers are arranged in parallelism to the main scrapers 1.

14 designates a plurality of stops secured to the undersides of bars 3 in the path of arms 8 to limit the forward movement of said arms.

In practice the scrapers 1 engage and distribute the loose dirt over the surface of the road and thereby fill any holes or hollows that might exist therein. but owing t h forwardly inclined faces of said scrapers the same will pass over the embedded stones and other fixed portions of'the surface without disturbing the same. The secondary scrapers 7 also perform efficient service in moving and distributing the loose dirt and by being hinged to the bars 3 are free to swing backward and pass over the fixed parts of the surface without loosening the same. By thus allowing the scrapers to pass over the fixed or compact portions of the road surface without disturbing the same, said surface will in time become packed over its entire area, and thereby prevent to a. large degree erosion due to heavy rains.

Having thus described my invention, what I claim is 1. A grader consisting of a plurality of bars, a plurality of scrapers, arms fixed to said scrapers and pivotally connected to the bars so that said scrapers may swing backward, stops on the bars in the path of the arms to limit the forward movement of the scrapers, and resilient means between the bars and the scrapers to resist the backward movement ofthe latter.

2. A grader consisting of a plurality of bars prirnary scrapers fixed to said bars, In testimony whereof aifix my signature each of sald scrapers consistlng of a bar, of in the presence of two wltnesses.

triangular cross section, extending the full Width of the grader; and secondary scrapers DAVID WARD KING 6 pivotally connected to sald bars, each of the WVitnesses:

latter being; a bar, of rectangularcross sec- LAFn DAWS N,

tlon, extendlng the full Wldth of the grader; H. J. GRIDER.

Copies of this patent may be obtained for 1175; cents each py addressing the Gommissioner o1 Patents,

. Washington, I). G. 

